Reaction of monoammonium phosphate with ammonium bicarbonate
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Is the reaction between monoammonium phosphate and ammonium bicarbonate exothermic or endothermic?
The heat absorption and release can be ignored
The reaction between monoammonium phosphate and ammonium bicarbonate produces diammonium phosphate and carbonic acid; this is equivalent to a strong acid generating a weaker acid. Since this reaction is exothermic, the endothermic reactions involving ammonia are more significant.